如何比较 Django 模板中的日期 [英] How to compare dates in Django templates

问题描述

我想在 Django 中将日期与当前日期进行比较，最好是在模板中，但也可以在渲染模板之前进行.如果日期已经过去，我想说过去"，如果是未来，我想说日期.

I would like to compare a date to the current date in Django, preferably in the template, but it is also possible to do before rendering the template. If the date has already passed, I want to say "In the past" while if it is in the future, I want to give the date.

我希望有人可以做这样的事情:

I was hoping one could do something like this:

{% if listing.date <= now %} 
     In the past 
{% else %} 
     {{ listing.date|date:"d M Y" }} 
{% endif %}

现在是今天的日期，但这不起作用.我在 Django 文档中找不到任何关于此的信息.谁能给点建议?

With now being today's date, but this does not work. I couldn't find anything about this in the Django docs. Can anyone give some advice?

推荐答案

在视图中比较日期，并将诸如 in_the_past (boolean) 之类的内容传递给 extra_context.

Compare date in the view, and pass something like in_the_past (boolean) to the extra_context.

或者更好地将其作为属性添加到模型中.

from datetime import date

@property
def is_past_due(self):
    return date.today() > self.date

然后在模板中:

{% if listing.is_past_due %}
    In the past
{% else %}
    {{ listing.date|date:"d M Y" }}
{% endif %}

基本上模板不是 IMO 日期比较的地方.

Basically the template is not the place for date comparison IMO.

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